Journal of Zhejiang University SCIENCE A

, Volume 13, Issue 11, pp 858–869 | Cite as

Surface settlement caused by twin-parallel shield tunnelling in sandy cobble strata



City metro tunnels are usually constructed as twin-parallel tunnels and their adjacent construction may lead to surface deformation, affecting the surface environment and the safety of the tunnels. Due to its strong dispersion, sandy cobble strata can be easily disturbed by shield tunneling. Based on the project of the Chengdu Metro Line 1, field and model tests were carried out to study the surface settlement caused by shield tunneling in sandy cobble strata by measuring surface settlement curves, ground loss ratios and construction influence zones. The discrete element method (DEM) was used to study the factors affecting the formation of ground arches in sandy cobble strata at the microscopic level. Results show that the shape of the surface settlement curve in sandy cobble strata is different from that in soft soil. The buried depth and clear spacing of the two tunnels had a significant impact on the formation of ground arches.

Key words

Twin-parallel shield tunneling Surface settlement Ground loss Field test Discrete element method (DEM) Model test 

CLC number



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  1. Chen, S.L., Li, G.W., Gui, M.W., 2009. Effects of overburden, rock strength and pillar width on the safety of a three-parallel-hole tunnel. Journal of Zhejiang University-SCIENCE A, 10(11):1581–1588. [doi:10.1631/jzus.A0920040]CrossRefGoogle Scholar
  2. Cundall, P.A., 1971. A Computer Model for Simulating Progressive Large Scale Movements in Blocky Rock System. Proceedings of International Symposium on Rock Mechanics, Rock Fracture, Nancy, France, p.2–8.Google Scholar
  3. Cundall, P.A., Strack, O.D.L., 1979. A discrete numerical model for granular assemblies. Geotechnique, 29(1): 47–65. [doi:10.1680/geot.1979.29.1.47]CrossRefGoogle Scholar
  4. Lee, K.M., Rowe, R.K., Lo, K.Y., 1992. Subsidence owing to tunnelling I: estimating the gap parameter. Canadian Geotechnical Journal, 29(6):929–940. [doi:10.1139/t92-104]CrossRefGoogle Scholar
  5. Liu, J.H., Hou, X.Y., 1991. Shield Tunelling Method. China Railway Publishing House, Beijing, p.329–332 (in Chinese).Google Scholar
  6. Loganathan, N., Poulos, H.G., 1998. Analytical prediction for tunneling induced ground movements in clays. Journal of Geotechnical and Geoenvironmental Engineering, 124(9):846–856. [doi:10.1061/(ASCE)1090-0241(1998)124:9(846)]CrossRefGoogle Scholar
  7. Lo, K.Y., Ng, R.M.C., Rowe, R.K., 1984. Predicting Settlement due to Tunnelling in Clays. Tunnelling in Soil and Rock, American Society of Civil Engineers, Geotech III Conference, Atlanta, USA, p.46–76.Google Scholar
  8. Mair, R.J., Taylor, R.N., 1997. Theme Lecture: Bored Tunneling in the Urban Environment. 14th International Conference on Soil Mechanics and Foundation Engineering, Rotterdam, p.2353–2358.Google Scholar
  9. O’Reilly, M.P., New, B.M., 1982. Settlements above Tunnels in the UK: Their Magnitude and Prediction. Proceedings of Tunnelling Symposium, London, p.173–181.Google Scholar
  10. Peck, R.B., 1969. Deep Excavations and Tunnelling in Soft Ground. 7th International Conference on Soil Mechanics and Foundation Engineering, Mexico City, Mexico, p.225–290.Google Scholar
  11. Rowe, R.K., Lo, K.Y., Kack, G.J., 1983. A method of estimating surface settlement above tunnels constructed in soft ground. Canadian Geotechnical Journal, 20(1):11–22. [doi:10.1139/t83-002]CrossRefGoogle Scholar
  12. Itasca Consulting Group, 2004. PFC2D (Particle Flow Code in 2 Dimensions), Version 3.1. User’s Manual. Minneapolis.Google Scholar
  13. Sagaseta, C., 1987. Analysis of undrained soil deformation due to ground loss. Geotechnique, 37(3):301–320. [doi:10.1680/geot.1987.37.3.301]CrossRefGoogle Scholar
  14. Sagaseta, C., 1988. Discussion on’ Analysis of undrained soil deformation due to ground loss’ by C. Sagaseta. Getechnique, 38(4):647–649. [doi:10.1680/geot.1988.38.4.647]CrossRefGoogle Scholar
  15. Uriel, A.O., Sagaseta, C., 1989. Selection of Design Parameters for Underground Construction. 12th International Conference on Soil Mechanics and Foundation Engineering. Rio de Janeiro, Balkema, p.2251–2551.Google Scholar
  16. Verruijt, A., Booker, J.R., 1996. Surface settlements due to deformation of a tunnel in an elastic half plane. Getechnique, 46(4):753–756. [doi:10.1680/geot.1996.46.4.753]CrossRefGoogle Scholar
  17. Wei, G., 2007. Prediction of surface settlement induced by ground loss during shield tunneling construction. Rock and Soil Mechanics, 28(11):2375–2379 (in Chinese).Google Scholar
  18. Wei, G., 2009a. Prediction of ground deformation induced by shield tunneling construction. Chinese Journal of Rock Mechanics and Engineering, 28(2):418–424 (in Chinese).Google Scholar
  19. Wei, G., 2009b. Study on calculation for width parameter of surface settlement trough induced by shield tunnel. Industrial Construction, 39(12):74–79 (in Chinese).Google Scholar
  20. Wei, G., 2010. Selection and distribution of ground loss ratio induced by shield tunnel construction. Chinese Journal of Geotechnical Engineering, 32(9):1354–1361 (in Chinese).Google Scholar
  21. Zhou, J., Ci, Y.W., Ci, Y., Xu, J.P., 2000. Simulation of biaxial test on sand by particle flow and code. Chinese Journal of Geotechnical Engineering, 22(6):701–704 (in Chinese).Google Scholar
  22. Zhou, J., Su, Y., Ci, Y., 2006. Simulation of soil properties by particle flow code. Chinese Journal of Geotechnical Engineering, 28(3):390–396 (in Chinese).Google Scholar
  23. Zhou, J., Kong, X.L., Ju, Q.H., Li, Y.Q., 2007. Mesoscopical study on interface between geosynthetics and soil. Chinese Journal of Rock Mechanics and Engineering, 26(1): 3196–3202 (in Chinese).Google Scholar

Copyright information

© Zhejiang University and Springer-Verlag Berlin Heidelberg 2012

Authors and Affiliations

  • Chuan He
    • 1
    • 2
  • Kun Feng
    • 1
    • 2
  • Yong Fang
    • 1
    • 2
  • Ying-chao Jiang
    • 1
    • 2
  1. 1.MOE Key Laboratory of Transportation Tunnel EngineeringSouthwest Jiaotong UniversityChengduChina
  2. 2.School of Civil EngineeringSouthwest Jiaotong UniversityChengduChina

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